Lipids

Lipids contain carbon, hydrogen and oxygen. They are insoluble in water but soluble in organic solvents e.g. alcohol aand acentones.

The main group of lipids are triglycerides (fats and oils), phospholipids and waxes.

Formation od a Triglyceride

Triglycerides are formed through condensation reactions where one molecule of glycerol combines with three seperate fatty acids. The fatty acids can be the same or different in structure and they confer the properties of the tryglyceride e.g. whether it's liquid or solid at room temperature.